TikTok may be the hardest platform to target individual groups of users. Carefully consider what your goals are and what you will consider TikTok success before jumping into using it. If you can create videos that link to trends and get discovered, people will follow you, but they may not be people on your campus.
Analytics can be found by clicking on your Profile and then the three lines in the upper right hand corner of the screen to get to the Settings menu and then clicking on "Creator tools." There, you'll receive metrics on all types of engagement with your videos. Make sure to drill down into the Followers section to see information about who's following you!